Calculate the speed of an 7.6×104 kg airliner

with a kinetic energy of 1.2 × 109 J.
Answer in units of m/s

1 answer

.5 (7.6 * 10^4) v^2 = 1.2 * 10^9

v^2 = .3158 * 10^5
or
v^2 = 3.158 * 10^4

v = 1.78 * 10^2
or
v = 178 m/s